Machine for mitering and cornering box-blanks.



PATENTBD APR. 25. 1905.

APPLICATION FILED APR. 2, 1903.

4 SHEETS-SHEET 1.

Inventor;

Witnesses.-

No. 788,288. PATENTED APR. 25, 1905.

- B. H. TAYLOR. MAGHINE FOR MITERING AND GORNERING BOX BLANKS.

APPLIOATION FILED APR. 2, 1903.

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PATENTED APR. 25, 1905.

E. H. TAYLOR.

MAOHINE'POR MITERING AND GORNERING BOX BLANKS.

APPLICATION FILED APR. 2, 1903.

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Patented April 25, 190 5.

PATENT OFFICE.

EUGENE H. TAYLOR, OF LYNN, MASSACHUSETTS.

MACHINE FOR MITERING AND CORNERING BOX-BLANKS.

SPECIFICATION forming part of Letters Patent No. 788,288, dated April25, 1905.

Application filed April 2,1903. Serial No. 150,788.

T 0 (all whom it may concern.-

Be it known that I, EUGENE I-I. TAYLOR, a citizen of the United States, residing at Lynn, in the county of Essex, State of Massachusetts, have invented a certain new and useful Improvement in Machines for Miter-ing and Cornering Box-Blanks, of which the following is a specification, reference being had therein to the accompanying drawings.

The invention relates more especially to machines on the order of that which is presented in Letters Patent of the United States granted to me June 10, 1902, No. 701,963.

The invention comprises improvements in the means for actuating the moving cutters of such a machine, in the means for supporting and adjusting the relatively fixed cutters, and in gages for use in connection with the cutters for properly positioning the blanks for the action of the cutters.

The accompanying drawings show a machine conveniently embodying the various features comprised under my present invention.

In the drawings, Figure 1 shows the said machine in side elevation. Fig. 2 shows the same in front elevation. Fig. 3 shows the same in plan. Fig. 4 shows the cam for actuating the movable cutters. Fig. 5 is a sectional detail View of the means for transmitting movement from the vibrating frame or arm to one of the movable cutters. Fig. 6 is a detail side elevation of the same. Figs. 7 and 8 are sectional details of one of the turntables and its carriage. Figs. 9 and 10 are detail views in elevation of one of the movable cutters, its back gage, and the guide for the cutter-head or carrier-bar.

Having reference to the drawings, the main frame of the machine is designated 1. The main or driving-shaft is shown at 2, it having applied thereto the loose band-pulley 3, in connection with which band-pulley are employed suitable clutching devices. The details of the said clutching devices are omitted from the drawings as being not necessary to be shown, with the exception of the sleeve or cone 1, which is arranged to move longitudinally of the said shaft and to be operated manually through suitable actuating connections. In the present instance the said sleeve or cone 4:

is engaged in ordinary manner by the forked upwardly-extending arm 51 of a bell-crank 5, which is suitably pivoted on a stud 52 at the rear of the frame of the machine. The horizontally-extending arm 53 of this bell-crank is engaged by the rear arm 61 of a treadle 6, which latter is fast upon a shaft 62, extending crosswise of the machine at the rear thereof, the said shaft being suitably journaled at its opposite ends at 63 63 in bearings with which the frame is provided. The main or driving shaft 2 has mounted upon the same a brake-wheel 7, and with the said brake-wheel coacts a brake-shoe 71, that is connected pivotally at 711, Fig. 1, to lugs 712, Fig. 2, projecting from a sleeve 72, fast upon the treadleshaft 62. A spring 73, having one extremity of the same connected with a suitable fixed portion of the machine-framework and the other connected with the treadle 6, acts with a tendency to move the treadle in a direction to effect the unclutching of the driving bandpulley and the application of the brake. Pressure upon the said treadle withdraws the brake-shoe 71 from the brake-wheel 7 and also effects the clutching. As thus far described, the parts may be of any preferred construction.

In order to enable the machine to be run continuously when desired without requiring the attendant upon the machine to keep his foot pressed upon the treadle 6, I combine with the latter a looking or latching device, as 8, capable of being broughtinto play when desired in order to retain the treadle and connected parts in position to keep the clutch closed and the power on. This device may vary in its construction and application in different embodiments of the invention. In the present instance it consists, essentially, as

' shown in Fig. 1, ofa bell-crank which is pivoted at 81 to the forward arm of the treadle 6, it having its engaging arm 82 adapted to take under the lower edge of a plate or lug 83, with which the machine-frame is provided. The remaining arm 84 of the bell-crank constitutes a tail or operating-arm, which may be pressed against by the attendants foot for the purpose of either swinging the lock or latch into position to engage with the said plate or lug or of moving the same to disengage it from the plate or lug. The lock or latch 8 is located, as indicated in the drawings, upon the treadle in a position which enables it to be operated by the same foot which is applied to the treadle for the purpose of depressing the latter. A flat or leaf spring, as 85, acting against surfaces on the movable bell-crank located near the pivotal point thereof and formed at an angle to each other, after the fashion of the well-known knife-hinge, serves to retain the locking device in either of the positions which it may be caused to assume. The main or driving shaft 2 is provided with a spur-pinion 9, meshing with a spur-gear 91 upon the shaft 92, from whichthe movable cutters are actuated, and through the said pinion and gear the latter shaft is driven. The movable cutters are actuated from a cam 93, Fig. 4, on the shaft last mentioned, the said cam being in the present instance constituted by a groove in one side of the gear 91 and being in operative engagement with an arm or lever 94, which is fast upon a cross-shaft 95, that is mounted in bearings 96 96 at the front part of the machine, the said arm or lever carrying at its rear extremity a cam-roll 97, working in the said cam-groove. The cam-actuated arm or lever 94 is in operative connection with the-vibrating arm or frame 10, by which the heads or carriers 11 11 of the movable cutters 111 111 are actuated. The said vibrating arm 10 or frame is mounted upon the shaft 101, supported by the uprights or standards 102 102, rising from the machine-frame at the rear of the machine. The connections between arm or lever 94 and the arm or frame 10 comprise, essentially, a forked coupling 12, a connecting-rod 121, and a T-shaped coupling 122. The connecting-rod 121 has right and left hand screw-threads at its opposite ends, the said ends fittinginto correspondingly-threaded sockets in the respective couplings 12 and 122. The forked coupling 12 receives between its legs the cam-actuated arm or lever 94, (see Fig. 2,) and is connected with the latter by means of a pin 123, Fig. 1, passing through the said legs and the said arm. The head of the T-shaped coupling fits between the opposite side portions of the vibrating actuating arm or frame 10 aforesaid, (see Figs. 2 and 3,) and is connected with the said arm or frame by means of a pin 124, Figs. 1 and 3. The vibrating actuating arm or frame 10 is in operative connection with the cutter-heads or carrier-bars 11 11 for the movable cutters 111 111, as I presently will proceed to explain. The said heads or carrier-bars are fitted to guides 112-112 on the standards 113, Fig. 1, rising from the turn-tables 114 114, which carry the fixed cutters, (not shown,) the said cutter-heads or carrier-bars being arranged to slide vertically through the said guides.

The connections between the vibrating actuating arm or frame 10 and the cutter-heads or carrier-bars 11 11 are in the present invention constructed and arranged to transmit movement to the said cutterheads or carrier-bars positively in both directions, the springs employed in the machine of my Letters Patent aforesaid for raising the cutterheads or carrier-bars after they have been depressed being dispensed with. Backlash or lost motion between the vibrating arm or frame 10 and the cutter-heads or carrier-bars is provided against in the construction of the said connections. The latter are also contrived so as to compensate for the fact that the portion of the actuating arm or frame 10 from which the motion is taken travels in a curved path constituting the arc of a circle, as will be apparent in Fig. 1, while the cutter-heads or carrier-bars are confined to vertical movement in right lines. The said connections, in addition, permit of ready adjust-- ment of the cutter-heads or carrier-bars toward and from each other. Having reference to the drawings, the cross-bar 103, constituting the forward portion of the vibrating cutter-actuating arm or frame 10, is transversely extended and formed or provided with guides which in the present instance are constituted by opposite horizontal flanges 104 104, extending longitudinally of the said crossbar. To the said cross-bar and its guides are applied blocks 13 13, one for each movable cutter, which clasp the flanges and are adapted to slide upon the same in the direction of the length of the cross-bar. (See more particularly Figs. 5 and 6.) As shown, these blocks have side portions 131 131, which rise at the edges of the opposite flanges and are furnished with lips 132 132, that fit closely over the flanges, the fit of the blocks to the cross-bar being such as to prevent vertical play between the blocks and cross-bar, while still leaving the blocks free to be adjusted lengthwise of the cross-bar. At their under sides the blocks 13 13 aforesaid are slotted across at right angles to the length of the cross-bar 103, and to these lower slots are fitted other blocks, 1414, having lateral flanges 141 141, which are engaged by the lips 133 133 at the under sides of the blocks 1313. The blocks 14 14 are thereby connected with the blocks 13 13 in a manner which enables the blocks 14 14 to move relative to blocks 13 13 in a direction from front to rear of the machine. Each of the lower blocks 14 14 in addition is flexibly connected with the upper end of the corresponding cutter-head or carrier-bar 11. In the presentinstance, as shown best in Fig. 5, a chamber extends from above downwardly into each block 14, and from the said chamber a hole extends through the lower part of the block. Through the said hole extendsthe stem of a screw 15, having its head 151 located within the said chamber. This screw 15 is carried by the adjustable socket 16, which is applied to the upper end of the cutter-head or carrier-bar 11. The lower part of the said socket l6'is screwthreaded exteriorly and is fitted into the chamber or pocket 161, which is formed in the upper end of the cutter-head or carrier-bar. (See Fig. 5.) The wall of the said chamber or pocket is screw-threaded interiorly to fit the exteriorly-threaded portion of the socket 16. The socket has a central verticalbore to receive the screw 15 and is screw-threaded interiorly to engage with the stem of the said screw.

At 152, Fig. 5, is shown a locking-screw which is screwed into the lower end of the bore of the socket 16 and by its contact with the lower end of screw 15 prevents loss of ad-- justment of the latter. A lock-nut 163, applied to the exterior of the socket and making contact with theupper end of the cutterhead or carrier-bar, maintains the socket in the required position of vertical adjustment.

bottom of the chamber within the said block 14 is also formed as a segment of a hollow sphere, and the head of the screw 15 is partly spherical to fit the same. The hole through the lower part of the lower block 14 is enough larger than the stem of screw 15 to permit the block 14 to swivel with relation to the screw 15.

As will be perceived from the foregoing, blocks 13 13 are adjustable longitudinally of the cross-bar 103 of the cutter-actuating arm or frame 10. Also the connection between an upper block 13 and the corresponding lower block 14 permits relative sliding movement of the upper block with reference to the lower one in a direction from front to rear in the machine as the vibrating actuating arm or frame 10 swings up and down. The ball-andsocket-like fit of the head of connecting-screw 15 within the chamber of block 14 and of the said block 14 to the socket 16 permits the said block 14 to conform to the varying inclinations of the upper block 13 without in any way disturbing the relations between said lower block and the other members of the connections, while maintaining a fit of the parts which is free from all looseness and lost motion. For the purpose of effecting a vertical adjustment of the path of the movement of the cutting edge of the cutter 111 the socket 16 may be screwed farther into or out of the chamber or pocket in the upper end of the cutter-head or carrier-bar 11. This adjustment Will compensate for variations in the vertical width of the cutter due, for instance, to the wearing away of the cutter at successive sharpenings.

The carriages upon which the respective turn-tables 114 114 are mounted are designated 17 17. These are mounted in ways 171 171, arranged horizontally opposite each other and fitting the beveled front and rear edges of the said carriages. The ways extend transversely of the machine, and the carriages are adjusted toward and from each other by means of the right-and-left screw 18. Each turn-table 114 is pivoted at or adjacent its front angle or apex upon its carriage 17 by means of a vertical pivot, as in my Letters Patent aforesaid, so as to have capacity for swinging horizontally upon the carriage. This enables the turn-table to be swung from the position for mitering a bod y-blank to that for cornering a cover-blank, and vice versa, as in my Letters Patent aforesaid. The operatinghandle 19 for each turn-table is pivoted at 191 (seemore particularly Fig. 7) to lugs 192, rising from the turn-table, and is provided with the actuating-spring- 193, Fig. l, and locking-pin 194, Fig. 7 as in the said Letters Pat- The lower end of pin 194 travels during the extent of such swinging movement is "limited by contact of the pin with the ends of the said groove or slot. 'Holes or depressions 196 196, Fig. 7, at the said ends receive the lower end of the pin for the purpose of holding the tu rn-table locked in its position of adjustment. A curved undercut or T-shaped slot 197,(dotted lines, Fig. Land full lines, Fig. 8,)formed in the carriage 17 receives the lower end of a bolt 198, Fig. 8, projecting downward from the turn-table 114, the flange of the head of said'bolt extending and working beneath the edges of the slot, as in Fig. 8, and thereby the turn-table is prevented from tilting upon the carriage.

' The connection between the socket 16 and the lower block 14 not only permits the block 14 to rock relative to the socket'as the actuating frame or arm 10 swings up and down, but provides for a turning or swiveling movement of the socket with relation to the block. 14. This capacity for relative turning or.

swiveling permits the turn-table to be turned about its pivot in shifting the cutters from one of the working positions of the latter to the other working position thereof without disturbing in any way the operative connection between the cutter-head and its actuating mechanism. So, also, rotary adjustment of the socket 16 for the purpose of varying the height of the movable cutter is permitted to be made simply by turning the said socket so as to screw it up or down within the internally-threaded chamber at the upper end of the cutter-head 11.

'It will of course be understood that at the time of makingvertical adjustment of the socket 16 by rotating it as just described the lock-nut 163 may be manipulated accordingly.

At 20 20 are side gages mounted upon the table 200 and adjustable upon the said table transversely of the machine in customary manner.

Upon each of the guides 112 112 for the cutter-head or carrier-bars 11 11 I mount a gage 21, Figs. 9 and 10, for the rear edge of the box-blank which is to be operated upon. These back gages 21 21 are provided with adjusting means by which their position may be varied as required. In the present instance each back gage 21 is provided with a plate 211, from which it projects downward past the position of the fixed cutter in the machine. These said plate is slotted horizontally at 212, and through the slot the stem of a securing bolt or screw 213 passes into the cover portion of the guide 112. The head of said screw serves to hold the plate 211 to the said guide 112. The plate 211 is furnished with a thumbscrew 215, which is fitted to a screw-threaded hole through a lug 216 on one end of said plate, the set-screw having a bearing in a lug 217 on the exterior of the guide 112. By means of the said thumb-screw the required adjustment of the back gage may be secured. By employing two separate edge gages adjacent the cutter to coact with the rear edge of the blank I am enabled to locate the said rear edge with greater certainty in the required position with relation to the cutters than where a single gage for the said edge is employed, as in the machine of my patent aforesaid. Vith a single rear-edge gage in connection with the usual side gage it may happen that corresponding edges of the blank may rest against the said gages, even although the blank itself is disposed at an angle to its correct position. When, however, the two rear-edge gages are employed, if the rear edge of the blank is caused to make contact with both it must occupy the proper position relative to the cutters. The independent ad justability of the two rear-edge guides enables the desired position of the rear edge of the blank to be secured with accuracy. This enables compensation to be made for any inaccuracy in the scoring of the blank, for should the scoring not be truly parallel with the rear edge of the blank the gages may be set so as to enable the apex of the cut that is produced by each pair of cutters to intersect the scoring-line. By mounting the back gages upon the guides 112 for the cutter-heads or carrier-bars the rotary required for cornering, the surface 218 of each back gage will be presented to the said edge of the box-blank. In Figs. 9 and 10 the cutter 111 is shown in its relatively depressed position alongside the back gage. Consequently the lower edge of the cutter is located at the lower end of the back gage. When the cutter is raised,-its lower end is elevated above the lower end of the back gage.

In the present machine the plates or blocks constituting the carriages 17 17 rest horizontally upon the horizontal lower portions of the ways 171 171. The ways at front and rear of the carriages are all formed as integral portions of the horizontal upper part of the machine-frame, and one or more depressed ribs or cross-bars 173 extend from front to rear, below the path of the carriages, tying the ways to one another. Firm horizontal support for the carriages is thereby afl'orded, enabling them to withstand the downward pressure that is due to the descent of the movable cutters against a box-blank resting on the turn-tables, while the construction is simple and compact. Gibs 174 17 1 are applied to the ways in connection with the rear edges of the carriages and are set up against the said edges by means of adjusting-screws 175. The angle between the horizontal way and inclined way at each side of the carriages is open, as shown in Fig. 1, the openings thereby produced, as well as those intermediate the front and rear of the carriages, affording free opportunity for the escape of cuttings, chips, &c., from the boxblank which is operated upon in the machine.

It is important that the workman should have ample opportunity for conveniently placing a box-blank in position between the cutters and adjusting the. same properly, as well as for first removing the box-blank, which previously was operated upon. In order to do this when the machine is being run continuously and at the same time maintain a sufficiently high rate of speed of the machine to render the machine profitably productive, provision is made for occasioning a dwell in the movement of the movable cutters while the same are upraised. This dwell is secured by forming the groove of the cutter-actuating cam 93 (see Fig. 4) with a concentric dwell portion 931, operating to secure the desired result in the action of the movable cutters.

In order to prevent the unclutching of the driving powerand the application of the brake except at a time when the movable cutters 111 111 are in their elevated position, a cam 98, Fig. 1, is mounted on shaft 92, this cam coacting with an arm 981, which is fast upon sleeve 72, Fig. 2, of the treadle 6. This cam acts against a roll or stud carried by said arm and acts to hold the parts in position to keep the clutch closed and the brake off until the elevation of the movable cutters takes place, at which time a depression in the cam 98 releases the arm 981 and permits spring 7 3 to move treadle 6 and effect the unclutching and the application of the brake.

What I claim is- 1. The combination with the movable cutters, actuating devices therefor, and driving mechanism embracing a power -'controlling treadle, of a lock movably mounted upon the said treadle for engagement with a fixed stop to hold the power on and the machine running, and adapted to be thrown into and out of action at will by the operators foot independently of the movements which are communicated to the treadle, and the said fixed stops.

2. The combination with the movable cutters, guides therefor, and means to eflect adjustment of the said guides to vary the distance between the said cutters, of actuating mechanism for the said cutters having a crossbar and a movable support or carrier for said cross-bar, and connections between said crossbar and said cutters, adjustable in the direction of the length of the cross-bar, and transmitting movement from the cross-bar to the cutters positively in both directions.

3. The combination with the movable cutters, guides therefor, and means for adjusting the said guides toward and from each other, of mechanism for actuating the said cutters, the said mechanism embracing a moving frame, and connections between said frame and the cutters, adjustable transversely on the frame in unison with the adjustments of the guides for the cutters, and transmitting movement from the frame to the cutters positively in both directions of movement of the frame.

4. The combination with the movable cutters, the cutter-heads, guides therefor, and means for adjusting the said guides to vary the distance between the cutters, of actuating mechanism embracing a cross-bar,and connections between said cross-bar and said cutterheads embracing foreach cutteramembermovable longitudinally along the cross-bar, a second member movable across thefirst member at right angles to the cross-bar, a socket mounted on the cutter-head and in rocking engagement with said second member, and means for connecting said socket and second member together. i

5. The combination with the movable cutters, the turn-tables mounted to be swung or turned into different working positions and provided with guides for the said cutters, and means to effect adjustment of the said turntables to vary the distance between the said cutters, of actuating mechanism for the said cutters embracing a moving frame, and connections between the said frame and the cutters, adjustable transversely on the frame in unison with the adjustments of the turn-tables, swiveling to permit the turning movements of the turn-tables, and transmitting movement from the frame to the cutters positively in both directions of movement of the frame.

6. The combination with the movable cutters, the turn-tables mounted to swing or be or arm having the cross-bar, and means to operate the said frame or arm, of the block movable lengthwise of the said cross-bar and engaging therewith, the second block engaging with the first block and movable transversely with relation thereto and to the cross-bar, the guide for the movable cutter-head, means for adjusting said guide in the direction of the length of the cross-bar, the movable cutter, its cutter-head, and connector devices joining said cutter-head and second block and in rocking engagement with said secondblock.

8. The combination with the movable cutters, the cutter-heads, the turn-tables mounted to be swung or turned into different working positions and having guides to which the said cutter-heads are fitted, and means to adjust the said turn-tables at different distances apart, of actuating mechanism for the said cutters having a cross-bar, and means for transmitting movement positively in both directions from said cross-bar to said cutter-heads,

embracing for each cutter a member movable longitudinally along the cross-bar, a second member movableacross the first member at right angles to the cross-bar, and a rocking and swiveling connection between said second member and said cutter-head.

9. The combination with the vibrating frame or arm and mechanism for actuating the same, the said frame or arm having a cross-bar, of the movable cutter, its cutter-head, the guide for said cutter-head, means for adjusting said guide lengthwise of the cross-bar, and devices for connecting the cutter-head to the said crossbar and transmitting movement from the latter to the former positively in both directions, comprising, essentially, a member adjustable longitudinally of the said cross-bar in unison with the adjustment of the guide for the movable cutter, and connections between said member and said cutter-head constructed to move transversely relative to the said crossbar. v

10. The combination with the vibrating frame or arm and actuating mechanism therefor, the said frame or arm having the crossbar, the movable cutter, its cutter-head, the

guide for said cutter-head, and means for adjusting the said guide in the direction of the length of the said cross-bar, of means fortransmitting movement positively in both directions from the cross-bar to the cutter-head comprising, essentially, a block adjustable on the cross-bar lengthwise of the latter, a second block in transversely-sliding engagement with the first block, a socket applied to the said cutter-head and to which the second block is fitted, a screw connecting the second block and socket together, the second block, socket, and head of the screw having concentric curved surfaces fitted to one another to permit relative rocking movement of the parts.

11. The combination with the movable cutters, the cutter-heads, the turn-tables mounted to be swung or turned into difierent working positions and having guides to which the said cutter-heads are fitted, and means to adjust the said turn-tables at different distances apart, of actuating mechanism for the said cutters having a cross-bar, and means for transmitting movement positively in both directions from said cross-bar to said cutter-heads embracing for each cutter-head a block adjustable on the cross-bar lengthwise of the latter, a second block mounted to slide transversely across the first block, a socket applied to the said cutter-head and fitting the second block in a manner which permits relative turning and swinging movements of the two, and a screw connecting the second block andsocket together.

12. In a mitering and cornering machine for box-blanks, the combination with the movable cutters, the turn-tables provided with guides for the said cutters and adapted to be shifted to change the cutters from the position for mitering to the position for cornering, and vice versa, of the back-edge gages in operative connection with the said turn-tables, and shifting their positions in unison with the cutters.

13. In a machine for mitering and corneringboX-blanks,tl1e combination with the turntables provided with guides for the movable cutters, the movable cutters, and their cutterheads, of back-edge gages for the box-blanks, carried by the said guides, and shifted in unison with the movable cutters by the turning of the turn-tables.

14. In a machine for mitering and cornering boxblanks,the combination with the movable cutters, their cutter-heads, and the turntables provided with guides for the said cutter-heads, of the back-edge gages for the boxblanks carried by the said guides and shifting in unison with the movable cutters when the turn-tables are turned, and means 'to adjust the said gages horizontally upon the said guides.

15. The combination with a movable cutter, its cutter-head, and a turn-table provided with a guide for the said cutter-head, of a backedge gage mounted upon the said guide, and a screw for adjusting the said gage upon the said guide relative to the said cutter, the said gagebeing shifted in unison with the cutter when the turn-table is swung around its pivot.

16. In a machine for mitering and cornering box-blanks, in combination, a turn-table, cutters supported thereby, a support on which said turn-table is pivoted and adapted to be swung into dilferent positions to shift the working positions of the cutters, the said support having an undercut slot, and the headed bolt applied to the said turn-table and working in the said slot, the engagement of the head of the bolt with the sides of the slot serving to restrain the turn-table from tipping under the action of the knives.

17. In a machine for mitering and cornering box-blanks, in combination, a turn-table, cutters supported thereby, a support on which said turn-table is pivoted and adapted to be swung into different positions to shift the working positions of the cutters, the said support having a groove or slot with holes or depressions at its opposite ends, and a locking pin or bolt applied to the said turn-table, work- 

